Roof separation sensor calibrator

Abstract

A roof separation sensor calibrator is used for detecting whether the accuracy of a roof separation sensor meets the standard or not. The roof separation layer sensor comprises a rectangular sensor main body and a measuring pipe vertically arranged in the middle of the sensor main body, and a steel wire rope is arranged in the measuring pipe; the roof separation layer sensor calibrator comprises a base, a portal frame and a central control computer, the portal frame comprises two vertical frames, the two vertical frames are arranged on the two sides of the base, the two vertical frames are each internally provided with a vertical lead screw, the lower ends of the two lead screws are rotationally connected through a transverse rod, and the transverse rod is driven by a motor to rotate; a lifting platform is arranged between the two lead screws, a weighing sensor is arranged on the lifting platform, the head of the weighing sensor is connected with the steel wire rope of the roof separation layer sensor, and a fixing support is arranged between the position under the weighing sensor and the base. The calibrator is accurate in calibration, high in efficiency and suitable for calibrating roof separation sensors on a large scale.

Description

technical field [0001] The invention relates to the field of mining and tunnel engineering, in particular to a roof separation sensor calibration instrument. Background technique [0002] Calibration mainly refers to the use of standard measuring instruments to test whether the accuracy (precision) of the instruments used meets the standards. Generally, it is mostly used for instruments with high precision. [0003] The roof delamination sensor is used in connection with the host computer for dynamic monitoring of the optical fiber roof outside the mine, which can detect the delamination of the roof. As the inventor mentioned in another patent CN202010537543.2, an improved mine optical fiber roof separation sensor, the steel wire rope of the roof separation sensor is provided with an anchor claw at the tight end, which is anchored in a hole deep into the coal seam. When the coal seam at the anchor position is separated from the layer, the top plate moves downward, and the i...

AI Technical Summary

Problems solved by technology

[0004] However, most of the roof delamination sensors on the market have not undergone unified factory calibration. Even if they have been calibrated, they are calibrated manually. There is no unified calibration standard. The sensor itself has quality problems but is sold normally, which damages the reputation and interests of the sensor manufacturer

It is even possible that the phenomenon of roof detachment in coal mines cannot be detected, and measures are not taken in time, resulting in mine disasters

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